Gear and Pinion Change - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

 4Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 34 (permalink) Old Jul 21st, 19, 8:33 AM Thread Starter
Tech Team
John
 
Join Date: Oct 2014
Location: Puerto Rico/Relocated now West Haven CT
Posts: 371
Gear and Pinion Change

wanted to know in case I decided to change the gear and pinion from the 4.33 to 3.73 as it is a 3 series carrier, can this be done while rear still in the car properly,
Bradco is offline  
Sponsored Links
Advertisement
 
post #2 of 34 (permalink) Old Jul 21st, 19, 9:58 AM
Team Member
Tom
 
Join Date: Sep 1998
Location: Mustang, OK USA
Posts: 12,228
Re: Gear and Pinion Change

The ring and pinion gears CAN be changed in the car. Although, I MUCH prefer to unbolt the entire axle housing assembly, roll it out from under the car and place the axle housing on jack stands and work on it that way, as below.


























IF, just IF, for sure, your differential is a 3-series (posi or non-posi), then yes, you can install a 3 series ring gear on it and set it up.

Do you know if the rear is a 10 or 12bolt and if it is a non-posi or posi unit?

Tom Parsons
TC# 474
#3 FOREVER!!!!!
Light travels faster than sound. That is why some people appear to be bright until you hear them speak. (unknown)
DZAUTO is offline  
post #3 of 34 (permalink) Old Jul 21st, 19, 10:30 AM Thread Starter
Tech Team
John
 
Join Date: Oct 2014
Location: Puerto Rico/Relocated now West Haven CT
Posts: 371
12 Bolt Yes I am sure when I initially got it I had thread started and I verified the carrier #s and that it is using a spacer to use the 4 series Richmond gear it just I installed the rear about 3 weeks or so ago to see if the 4.33 would be good but was told it would be better with 3.73 with my 2004-r
Bradco is offline  
 
post #4 of 34 (permalink) Old Jul 21st, 19, 11:11 AM
Senior Tech Team
Freddie
 
Join Date: Feb 2000
Location: Central City, Ky.
Posts: 9,225
Re: Gear and Pinion Change

Yes, I've done a few hundred of them under the car with the car on jack stands. It's not a lot of fun, especially when you are trying to crush the spacer to set the pinion bearing preload. I have a special set of jack stands that I can use on a bench when the rear end is out of the car. I can rotate the rear end in the position I want and lock it down. It's a lot easier that way.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
big gear head is online now  
post #5 of 34 (permalink) Old Jul 21st, 19, 11:23 AM Thread Starter
Tech Team
John
 
Join Date: Oct 2014
Location: Puerto Rico/Relocated now West Haven CT
Posts: 371
Hummmmm so either I take it back out and do it myself or take it out and take to a shop here to do it which I have no way to transport it.
Bradco is offline  
post #6 of 34 (permalink) Old Jul 21st, 19, 11:38 AM
Lifetime Premium Member
Ed
 
Join Date: Nov 2012
Location: San Diego
Posts: 894
Garage
Re: Gear and Pinion Change

Quote:
Originally Posted by Bradco View Post
Hummmmm so either I take it back out and do it myself or take it out and take to a shop here to do it which I have no way to transport it.
Rent a Home Depot truck. $20 for 90 minutes.

Ed

70 El Camino SS 396
68 GTO (Thanks Mom)
06 Silverado
07 SRX
OO52 is offline  
post #7 of 34 (permalink) Old Aug 1st, 19, 8:45 AM Thread Starter
Tech Team
John
 
Join Date: Oct 2014
Location: Puerto Rico/Relocated now West Haven CT
Posts: 371
Best place to purchase ring and pinion and install kit, looking for Strange 3.73 also if I need Eaton type rebuild kit where to get those parts
Bradco is offline  
post #8 of 34 (permalink) Old Aug 1st, 19, 7:24 PM
Team Member
mark
 
Join Date: Mar 2005
Location: connecticut,east haven
Posts: 2,091
Re: Gear and Pinion Change

I have a 4 series set of 3,73 used one year,,us gear I bought from strange


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
1965 malibu,03 silverado ss



M.J. 496
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

th350,4.11 3250lbs,+185 FOR ME
28x10.5 Hoosiers
9.85,135.50,1.35
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
mino65 is offline  
post #9 of 34 (permalink) Old Aug 1st, 19, 9:00 PM
Lifetime Premium Member
Brian
 
Join Date: Apr 2000
Location: Holland, PA
Posts: 1,133
This might be helpful. Good read and then watch the video.

https://www.hagerty.com/articles-vid..._Friday_May_24

Team Chevelle Member (19 years and counting...
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
)

'72 Chevelle Convertible (Mohave Gold) (all SS options, no SS badging)
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


2004 Pontiac GTO (Quicksilver) RIP April 2013
--> Replaced with 2004 Pontiac GTO (Barbados Blue)

2003 Chevrolet Avalanche (Sunset Orange Metallic)
72soft-top is offline  
post #10 of 34 (permalink) Old Aug 1st, 19, 9:59 PM
Lifetime Premium Member
leo
 
Join Date: Oct 2003
Location: Southwest Florida
Posts: 13,103
Re: Gear and Pinion Change

www.ringpinion.com

Leo Paugh
Maryland Chevelle Club #017
A.C.E.S.#3731
progress has little to do with speed, but lots to do with direction

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
LeoP is offline  
post #11 of 34 (permalink) Old Aug 2nd, 19, 6:58 AM
Lifetime Premium Member
Eric
 
Join Date: May 2017
Location: Walden, NY
Posts: 628
Re: Gear and Pinion Change

Quote:
Originally Posted by Bradco View Post
Hummmmm so either I take it back out and do it myself or take it out and take to a shop here to do it which I have no way to transport it.
My experience is that you will get as good a job and likely better if you do it yourself especially if Freddie is willing to guide as he did me. In the olden days transmission shops usually also did rear ends but the guys who really know what they are doing are drying up. I've seen horrible jobs done by one local shop here. I've done two myself with no issues. Both were done in the car and my advice to you is to take it out.
Dansk is offline  
post #12 of 34 (permalink) Old Aug 2nd, 19, 9:25 AM
Tech Team
 
Join Date: Jul 2018
Posts: 282
Re: Gear and Pinion Change

It makes it a lot easier to take the assembly out of the vehicle.
ZEN357 is offline  
post #13 of 34 (permalink) Old Aug 2nd, 19, 11:45 AM Thread Starter
Tech Team
John
 
Join Date: Oct 2014
Location: Puerto Rico/Relocated now West Haven CT
Posts: 371
Update, took car to a machine shop older guy that I wa thinking on rebuilding the rear. We took it for a ride he told me that my u joint was bad /. I vibration bought one on way home on highway joint broke and I think drive shaft getting towed and will check further. Can I have this rebuilt or just buy new driveshaft? Always something but hey it’s all good
Bradco is offline  
post #14 of 34 (permalink) Old Aug 2nd, 19, 1:21 PM Thread Starter
Tech Team
John
 
Join Date: Oct 2014
Location: Puerto Rico/Relocated now West Haven CT
Posts: 371
Re: Gear and Pinion Change

Driveshaft not broken just joint, end where joint goes in a little scrapped up. trying to remove drive shaft and seems to be stuck in transmission side worried about banging out going to see if I can change the joint under car without removing from transmission. also found I was able to take pinion nut off by hand, does that have to be torqued? and if so does anybody have that info
Bradco is offline  
post #15 of 34 (permalink) Old Aug 2nd, 19, 6:04 PM
Senior Tech Team
Greg.
 
Join Date: Apr 2011
Location: Ottawa, On, Canada
Posts: 4,653
Garage
Re: Gear and Pinion Change

John I would think any Nut/Bolt that has a lot of Movement on it would have a specific Torque required

If it is a steel Driveshaft I would have it Re-balanced with bigger U Joints
if it can be Re-balanced !

What size are your U Joints ? 1350s ??

Another thought
what kind of Posi Unit do you have ?
if you have the Auburn Posi Unit I would throw it out
if the Eaton Posi Unit then you could leave it in and just change the Gears

however I found that it is better to run a Helical Gear Dif/Posi Unit ( Worm Like) no Springs
https://www.strangeengineering.net/p...-s60-n-5.html/
this is in my S60 I bought from Strange and I love it
since you are in there all ready
something to ask Freddie about tho

67 Chevelle Malibu SS Cdn
Born 283 / PG / A51
468/TH400 2,500 stall/ S60 3.70 Gs
Prev Best on M/T ET S/S #3454 street Tires/Dress 2018/05/20
60' = 1.664
1/8 = 7.532 et / 91 mph
1/4 = 11.814 et / 115 mph
NEW Best with 3,500+ Stall TC 2019/06/23
60' = 1.561
1/8 = 7.411 et / 90.18 mph
1/4 = ??.??? et / ??? mph


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Kirk's67SS is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome